Attachment for vacuum cleaners



June 19, 1928.

A. A. sERvA ATTACHMENT FOR VACUUM CLEANER S 2 Sheets-She et 1 Filed Jan. 26, 1924 AASe/Wa v W 4K5)"; Sta-01 m June 19, 1928. 1,673,920 T I A. A. SERVA ATTACHMENT. FOR VACUUM CLEANERS Filed Jan. 26, 1924 2 Sheets-Sheet 2 liiii.

AAJe/wa Patented June 19, 1928.

UNITED STATES PATENT OFFICE.

ADAM A. SERVA, OF CANTON, OHIO, ASSIGNOR TO THE UNITED ELECTRIC COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

ATTACHMENT FOR VACUUM CLEANERS.

Application filed January 26, 1924. Serial No. 688,718.

The invention relates to vacuum cleaners and more particularly to an attachment for the connection of a flexible hose by means of which nozzles and cleaning tools may be.

used for cleaning draperies, upholstery and the like.

The objects of the invention are to provide an attachment of the character referred to with a shoe arranged to be partly insert ed into the nozzle chamber of a portable vacuum cleaner and connected with the mouth of the air passage leading from the nozzle chamber to the fan chamber of the machine, means being provided for normally holding the attachment in place after it has been inserted. Y i

The above and other objects may be attained in the accompanying drawings, in which 1 Figure 1 is a longitudinal sectional view through a portable vacuum cleaner showing the improved attachment connected thereto;

Fig. 2, a fragmentary section on the line 2-2, Fig. 1, the attachment being removed;

Fig. 3, a front elevation of the shoe of the attachment I Fig. 4, a bottom plan view of a portable vacuum cleaner with the improved attachment connected thereto, parts being broken away for the purpose of illustration;

Fig. 5, a perspective view of the shoe of the attachment; and I Fig. 6, a perspective view of the hose connection of the attachment.

Similar numerals of reference indicate corresponding parts throughout the several figures of the drawings.

The attachment'jfmay be connected to a portable vacuum cleaner of the type illustrated, which includes generally a case forming a fan chamber 1, a nozzle chamber 2, an air passage 3 leading from the nozzle chamber to the fan chamber, and an outlet neck 5 to which the usual dust collector bag 6- is connected.

The motor 7 may be supported upon the fan casing and arranged to drive the fan 8 which is located within the fan chamber, a handle bail 9 being pivotally connected to the casing for the attachment of the usual handle by means of which the vacuum cleaner may be moved to and fro upon the floor or other surface to be cleaned.

The nozzle chamber 2 is provided with the usual elongated cleaning mouth 2, and the rear wall 10 of the chamber is preferably formed substantially fiat and provided with the substantially rectangular opening 11 forming the mouth of the air passage 3, as illustrated in the drawings. lVith this exception, the vacuum cleaner to which the attachment is adapted to be connected, may he of any usual and well known construction.

The attachment to which the invention pertains comprises the attachment shoe and hose connection indicated generally by the numerals 12 and 13 respectively.

The attachment shoe is substantially triangular in cross section, and one side is provided with the flat rim face 14 having the substantially rectangular mouth 15 which may be provided with a protruding flange rim 16 adapted to be inserted and fit into the mouth 11 of the air passage 3.

The upper wall 17 of the attachment with a curved wedge rib 18 near its lower edge. A protruding flange 19 may be provided along the lower edge of the mouth of the shoe to form a groove 19' for engagement with the rear lip of. the cleaning mouth of the nozzle chamber. the like, as indicated at 20, may be provided upon the rim face 14 of the mouth otthe attachment.

The hose connection 13 of the attachment may include a box 22 having an opening 23 in its upper wall registering with an opening 24 in the lower wall 25 of the shoe 12, to which lower Wall the box is connected as by the screws 26..

The hose connection may also include a tubular neck 27 inclined upward at the forward side from the bottom of the box, which neck is adapted to receive the hose nipple 28. A lug 29 extends upward from the end of the neck 27 and is provided with the side flanges 30 between which is pivoted the cam 31, a spring 32 being provided for normally ur ing the same upward.

screw 33 extends through the lug 29 for engagement with the cam 31 to force the same downward over the forward lip 34 of the cleaning nozzle as shown in Fig. 1. It is, of course, understood that a flexible hose, provided with. any suitable cleaning tool or nozzle, may be attached. to the hose nipple 28. Means, such as the U-shaped feet 35, may

shoe 'is convexly arched and may be provided A packing of felt or be carried upon the under side of the mouth shoe 12 of the attachment, for bearing upon the floor when the attachment is placed in position, as shown in Fig. l.

The shoe of the attachment thus described, may be partly inserted into the nozzle chainber of the vacuum cleaner, by engaging the groove along the lower edge of the mouth of the shoe with the rear lip of the mouth of the nozzle, and then swinging the curved wall of the attachment upward into the nozzle chamber until the rim free of the mouth of the shoe abuts the rear wall of the nozzle chamber, while the protruding flange enters and tits into the mouth ot the air passage.

The shoe is wedged against the rear wall of the nozzle chamber. by action of the curved rib 18 against the front wall of the chamber; and the shoe is clamped into position by the screw 33 and the cam 31.

When thus fixed in place, the attachment forms a communication between a flexible hose carrying a hand tool, directly with the mouth of the air passage leading to the fan chamber, which passage is entirely out oif from the nozzle chamber; the felt packing upon the rim of the mouth of the shoe serving to seal the joint between the mouth of the attachment and the mouth of the air passage.

I claim:

1. A vacuum cleaner including a casing forming a fan chamber, a nozzle chamber, and an air passage leading laterally from the nozzle chamber to the fan chamber. and a hose .attachmcnt including a shoe insertable through the mouth of the nozzle chamber having an opening in one side detachably engaged with the mouth of the air passage.

2. A vacuum cleaner including a casing forming a fan chamber, a nozzle chamber, and an air passage leading laterally from the nozzle chamber to the fan chamber, and a hose attachment including a shoe insertable through the mouth of the nozzle chamber having an opening in one side dctachably engaged with the mouth of the air passage, and means engaging the interior of the nozzle for clamping the attachment into position.

3. A vacuum cleaner including a casing forming a fan chamber. a nozzle chamber, and an air passage leading from the nozzle chamber to the fan chamber, there being a lip common to the mouth of the nozzle and the mouth of the air passage, and a hose attachment ncluding a shoe with an opening having one edge engaged with the common lip and the remainder of the rim engaged with the mouth of the air passage.

4. A vacuum cleaner including a casing forming a fan chamber, a nozzle chamber, and an air passage leading from the nozzle chamber to the fan chamber, there being a lip common to the mouth of the nozzle and the mouth of the air passage, and a hose attachment including a shoe with an opening having one edge engaged with the common lip and the remainder of the rim engaged with the mouth of the air passage, and integral means on the shoe for engagement with the opposite lip of the nozzle for wedging the attachment into position.

5. In a vacuum cleaner including a casing forming a fan chamber. a nozzle chamber, and an air passage leading from the nozzle chamber to the fan chamber, and a hose attachment including a shoe having an opening in one side, a curved portion on another side bearing against the opposing wall of the nozzle chamber and means engaging the exterior of the nozzle for clamping the shoe opening in engagement with the mouth of the air passage.

6. In a vacuum cleaner including a casing forming a fan chamber, a nozzle chamber. and an air passage leading from the nozzle chamber to the fan chamber, and a hose attachment including a shoe having an opening in one side and a curved rib on another side bearing against the opposing wall of the nozzle chamber for directing the shoe opening toward and into the mouth of the air passage, and means for clamping the attachment into position.

7. A vacuum cleaner including a casing forming a fan chamber, a nozzle chamber, and an air passage leading laterally from the nozzle chamber to the fan chamber, and a hose attachment including an elongated shoe substantially triangular in transverse cross section and adapted to be inserted into the nozzle chamber and dctachabl y engaged with the mouth of the air passage.

8. A vacuum cleaner including a casing forming a fan chamber. a nozzle chamber, and an air passage leading laterally from the nozzle chamber to the fan chamber, and a hose attachment including an elongated shoe adapted to be inserted sidewise through the mouth of the nozzle chamber and detachably engaged with the mouth of the air passage.

In testimony that I claim the above. I

have hereunto subscribed my name.

ADAM A. SERVA. 

